Operational non-compliance involving a The Boeing Company 747-400, UNKNOWN, Bindook, NSW on 13 August 1993

The Boeing 747 was cleared to descend to flight level 200 with a requirement to reach flight level 200 by Bindook. This requirement was to achieve separation with a Boeing 737 which had a requirement to reach flight level 210 before Bindook. When the B747 passed Bindook the aircraft was observed by radar to be at flight level 220, and this was confirmed by the pilot. The aircraft was immediately put on a heading to achieve separation with the 737 and no separation breakdown occurred.